Prediction: PS4 to sell a minimum of around 70% of its lifetime sells in the first 2 to 3 years in the market.

[DietSoap]

This was actually pretty much the exact same prediction I made... Except for Wii U.

I think 2014 Wii U sales are going to be absolutely insane, I even made a bet it would sell more then the PS4 and One this year when everything is said and done... But after that, I'm expecting a massive drop off. 2015 will likely at least be better for the Wii U than 2013 was, but that's still pretty, and after that I think it's truly finished. They'll still probably abstain from making a new console until 2017 just for appearances, though.